go with the spli switch, it's what I have. The difference is the spli comes with the wires already attached so all you have to do is SPLIce it in to the existing switch wires. It makes for easier installation. As for the striker, it's nearly half the weight of the original stock unit. I also have that part and it works great; you just have to tune it with a spring kit. Why? Because a lighter hammer = less recoil, AND less weight/inertia so when it hits the valve pin, the valve is opened less than the stock hammer does. I went with a light valve spring and a medium (approximately stock oem tension) main spring. That gave me the dwell (time and amount the valve is open allowing gas thru) I needed for the pressure I run at, which is 300-325 psi. Good luck